142140100 has 18 divisors (see below), whose sum is σ = 308444234. Its totient is φ = 56856000.

The previous prime is 142140091. The next prime is 142140127. The reversal of 142140100 is 1041241.

It can be written as a sum of positive squares in 3 ways, for example, as 16386304 + 125753796 = 4048^2 + 11214^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 710601 + ... + 710800.

Almost surely, 2^142140100 is an apocalyptic number.

142140100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142140100 is an abundant number, since it is smaller than the sum of its proper divisors (166304134).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142140100 is a wasteful number, since it uses less digits than its factorization.

142140100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1421415 (or 1421408 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 142140100 is about 11922.2523039902. The cubic root of 142140100 is about 521.8818648027.

Adding to 142140100 its reverse (1041241), we get a palindrome (143181341).

The spelling of 142140100 in words is "one hundred forty-two million, one hundred forty thousand, one hundred".